Jointer.



J. HERZUG.

JOINTBR'.

' APPLIOAVTION FILED FEB. 15, 1908 Patented Apr. 27, 1909.

3 SHEETS-SHEET 1.

, Ullllll FIIIII .IIIL

lill/'f l l I l l ||L [7n/enfer @@@agf E Joh n 'fer of.

J. HERZOG.

Jom'rn. y APPLICATION FILED FEB. 15,1908.

Patented A111227, 1909.

3 SHEETS-TSHBET 2.

i v fizelzor rfoz 71V. Herzog. l

0110 l o .uY L..

lState of Michigan, have invented certain scopicextension member C, thesemembers frame D which extends across between the v posts. The' nuts F are secured to or formed inte al with be'vel gear wheels H -which mes with bevel pinions I upon shafts J.

UNITED sTATEs PATENT oEEIcE.

JOHN HERZOG, or sAG1NAwMIcEiGAN- JOINTER.

To all whom it may concern.'

Be it known that I, JQHN HERZOG, a, citizen of the United States of America, residing at Saginaw, in the county of Saginaw and new anduseful Improvements in Jointers, of which the following is a speciiication, reference being had therein to the accompanying drawings.

Ihe invention relates to that typeA of wood planing machines known as jointers', and it is the primary object of the-invention to provide automatic mechanism for feeding the work to the revolving cutters thereby avoiding the danger incident to the handfeeding operation.

It is a further object to rovide mechanism which will feed the strips with a slight ressure thereon which would not tend to fiend or spring lthe board from its natural sha e, so'that when completed the planed su `acewill be erfectly straight.

With these objects in view, the invention consists in certain features of construction as hereinafter set forth.v

In the drawings-Figure 1. isa side elevation, partly in section, of my improved workfeeding mechanism lindicating the jointer proper in dotted lines; Fig. 2 is a plan view thereof; Fig. 3 is an end elevation; and Fig. 4 is a fragmentary vertical section of one ofthe cross bars.

My improved feed mechanism is applicable to any construction of jointer, and may be mounted either upon the same or an en tirely distinct frame work. As illustrated in the drawings, the mechanism is mountedv upon a separate frame which surrounds'the main frame of the jointer, and comprises four posts A connectedby longitudinal and cross bars B B Each of the posts A is hollow and hasin engagement therewith a telebeing lconnected at their upper ends with a posts and above the bed of the jointer indicated in dotted lines at E.v The extension members C may be raised or lowered in the posts A- by suitable mechanism which, asshown, consists of threaded nuts F engaging threaded portions of the members J, and supported upon end thrust bearings Gin the These shafts are simultaneously driven at Specification of Letters Patent.

Application i1ed-February .15, 1908.

Patented April 27, 1909.

serial No. 416,097.

corresponding speed by a suitable gear train, such as the gear wheels K K K2 from the main drive shaft L,journaled in bearings upon the frame. A' clutch L is interposed between the gear wheel K? and the'shaft L and is controlled by a lever or rodfL", the arrangement being fsuch thatat any time the gear .train may be thrown into o eration to raise-or lower the members C an D mounted therenn,

the frame The'feed mechanism mountedupon the bar, and are yieldably pressed downward by springs Q. The tension of these springs is only sufficient to engage the points of the iingers P with the upper surface of the board to be fitted without in any way s ringing the board from its natural sha e. ,l ttl-1e same time, -the large number of) fingers that are simultaneously engaged with the same board will exert a suiiicient driving force to feed the work across the bed of the jointer. l

The endless feed chain M is driven from the s aft L through .intermediate mechanism which will ermit of vertical adjustment of the frame This, as shown, consists of bevel gear wheels R and S respectively upon the shaft Land uponl a vertical sha-ft T,A which latter is arranged adjacent to one of the posts A. The upper end of this shaft is, journaled in bearings U on a `frame D, and

intermediate these bearin is `a Worm V, which is splined upon the s aft T so as to be .vertically adjustable but rotatively fixed thereto. Theworm V meshes with a worm at one end thereof and will be engaged by the iingers P of the chain M which carries it forward and across the rotary cutter X. After the engagement ofthe forward end of each boardV with the feed' mechanism, the remainder of the o eration is automatic, and therefore no skil ed labor is required, nor is there any danger to the Workman. At the same time, eaeli board, while it is fed, is held from rocking movement by the iingers P, and thus the work is more satisfactorily performed than by hand feed.

lt frequently happens that a board is so badly bent or twisted'as to require several cuts to complete its straightening. y I have therefore made use of the upper portion of the chain M as a return conveyer upon which any stri s which need another cut may be p laced, an will be carried back to the feed end.

What I claim as my invention is:

1. The combination with a bed and a rotary cutter projecting upward therethrough,

of an endless work carrler positioned above said bed, comprising a series of cross bars and a plurality-of yieldable fingers arranged longitudinally of each cross bar, said fingers being so ositioned and arranged as to 'con-V form to t e lateral and longitudinal contour of the work.

2. The combinationwith a bed and a rotary cutter projecting upward therethrough, of an endless work carrier for feeding the work over said table and holding the same in engagement with the cutter comprising cross through, of an endlessrwork carrier for feeding the work over said table and holding the same in. engagement with the cutter composedof a series of cross bars and a plurality of spring-pressed fingers arranged longitudinally of each cross bar, and adapted toconform to the lateraland longitudmal contour of the work, each of said spring-pressed fingers comprisin a vertical member projecting on both sigas encircling said vertical member, and a housing for said spring.

of the cross bar, a spring 4. The combination with' a jointer, of an endless Work carrier comprising a series of cross bars and a plurality of fingers arranged longitudinally of each cross bar and projectmg into engagement with the Work, each of said ngers comprlsmg a vertical member.

projecting on both sides offthe cross bar, a spring encircling said vertical member, a bearing on the latter for the s ring adapted to engage thecross bar and limit the outward movement of the vertical member, and a housing for said spring.

5. The combination with a bed, and a rotary cutter projecting upwardly there-- 

